Ответ:
3х+11-2х+7=4х
3х-2х-4х=-11-7
-3х=-18
х=+(18:3)
х=6
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Ответ:
3х+11-2х+7=4х
3х-2х-4х=-11-7
-3х=-18
х=+(18:3)
х=6